Hebman l



Patented Oct. 4, 1927.

UNITED STATES 12644391 PATENT OFFICE.

HERMAN L. srEoNesoN, 0F BROOKLYN, NEW YORK, ASSIGNOB TO 'rnErnoms a:

BErrsoo, 0E ELIZABETH, NEW JERSEY, A CORPORATION OF NEW JERSEY.

CABLE CONNECTER.

Application filed October 18, 1923. Serial No. 669,200.

This invention relates to cable connecters and electrical fixture boxes, such as outlet boxes, switch boxes, cable boxes, connectors, and the like.

An object of the invention is to produce an improved combination cable connecter and electric fixture box possessing structural improvements in the way of cable and conduit anchoring or fastening means; and an importantfeature of the invention resides in the single piece structure of the connecter carryin no screws or other cable, clamping accessory device, and a small amount of material is used in manufacturing the connecter.

An additional object is to produce an improved cable connecter of simple one piece structure capable of being manufactured by stamping and drawing the connecter from sheet metal thereby saving casting operations. Likewise it is an object to produce a cable connecter which positively functions to securely fasten an armored cable to said box as well as produce a cable connecter which fits standard round knock-out holes in boxes of present-day use.

The accon'ipanying drawing illustrates a preferred form of the invention, the construction of which may be suitably varied in certain respects without departing from the scope and principle of my invention.

Figure 1 illustrates a plan view of an outlet box with a cable joined thereto by the use of the improved connecter; and Figure 2 shows a sectional view taken on the line 22 of Figure 1.

Figure 3 illustrates a perspective view of the cable connecter.

Figure 4: shows an outside view of an assembled connecter, box, and. cable. 4

Figures 5 and 6 illustrate modified forms of the invention, the first View being in plan, while the second view shows an outside ole vation of the assembled elements.

Referring now more particularly to the drawing first for a description of the box, there is shown a box B of conventional design having a standard round knock-out cable receiving hole H; and the box may be formed With a notch 9 cut from the up per edge thereof and extendingdownwardly towardsthe said knock-out H. have a combination notch 9 and standard round knock-out hole H for use in connecting a cable to the box as will be described;

Thuswe and a feature of my invention resides in the structure and arrangement .of parts whereby the notch 9 is substantially closed thereby providing a sealed box structure after the said box, the cable connecter, and. the cable are all assembled.

The box is also provided with a drawn or swedged in wall 10 having anopening 11 for the reception of the legs or forked ends of a cable connecter as will bedescribed. The said swedged in wall 10 and spaced openings 11 are formed in the box wall B substantially in alignment with the notch-.9 and knock-out hole H, the arrangement being such that a connecter cooperates with the three openings made in the box wall to securely anchor a cablein the box knock out as well as securely hold the connecter in the box. l Y Y i 1 Coming now to a description-0f theconnccter itself, there is shown a stamped member provided with clamp legs and having a cable stop wire bushing spaced from the legs. The stamped coimecter consists of a substantially-U-shaped or looped body let one part of which terminates in a bifurcated structure affording a plate made of prongs or legs 15. The adjacent internal edges 16 of the said prongs or legs extend angularly with relation to the longitudinal axis of the said connecter thereby converging toward the top. It is this design of the connecter device which causes it to clamp upon a cable with great holding force. y

The other side or part of the loop or U- shaped body 14: extends downwardly to an offset web or portion 17 which-is turned down to form a cable bushing and wire support part-l8. In this manner the body extremities or plates 15 and 18 are spaced from each other a distance suflicientlyfarv as will permit a cable extremity C to be well inserted within the box hole H thereby avoiding the possibility. of attempting to secure a grip on the cable end at a point too near the extremity thereof. The cable stop or bushing plate 18 is made with a drawn or swedged out bushing 19 which affords an oval edged or rounded hole surface through which the cable wires V pass in making electrical connections in the box B. It is observed that the looped body l comprises two closely spaced walls or plates affording a slide receptacle into which the wall B of the box closely fits thereby causing the body prising in combination, a box with a hole, a U- shaped connecter placed astride the box wall and driven down thereon and having a cable opening registering with the box hole into which a cable is received, said connecter including cable engaging prongs, and said box having an opening in the wall thereof to receive the end of each prong.

6. Cable and box connecting means com- I prising a box with a hole, a connecter fashioned from sheet metal bent into substantially U-shaped form which fits astride the box wall and is driven into position over the box hole, which provides one portion inside the box and another outside thereof, said outside portion having a cable engaging and gripping opening registering with the box hole, and said inside portion including an off-set which spaces it. from the box hole and including a bushing in the spaced portion.

7 A cable connecter comprising, a sheet metal part bent to form closely spaced parallel portions at one end of the connecter to straddle a box wall above the hole therein,

and including a-forked cable engaging ortion with converging gripping edges w ich bite into a cable.-

8. A connecter comprisin a sheet metal U-shaped part including a ifurcated cable engagin member, and includin a bushmg :paced t erefrom in line with t e bifurcaion.

9. A connecter comprising, a sheet metal member bent to brin its ends into parallel position, one end inc uding a cable gri ping opening, and the other end including a ushing in line with said opening.

10. A connecter as defined in claim 8 wherein the end carrying the bushing has an off-set which spaces the bushing from the cable gripping opening.

11. A connecter comprisin a sheet metal member bent to form close y spaced parallel portions, having an ofi-set in one portion to provide parallel portions of greater spacing than that of the first named parallel portions, a cable gripping opening in one portion, and a bushing in the other portion in line with the opening. I

12. A connecter as defined in claim 10 wherein the cable opening consists of a U-shaped forked opening with converging gripping edges.

In testimony whereof I aflix my signature this 26th day of Sept. 1923.

HERMAN L. STRONGSON.

- 1 644,292 O 1927 s. THOMAS, JR

CABLE CONNECTER Filed Jan. 22, 1924 2 Sheets-Sheet l INVENTOR 'eorqe C Thomas/r:

BY I ORNEYS 

